The Kawanishi H8K1 & K2 bore a close resemblance to the Short Sunderland.
The K2 was heavily defended with 20mm guns in the turrets.
The K1 had a narrow hull, which proved unstable in the water, so was widened in the K2.
Hard to pick that difference from the photo used, so K2 has been accepted as correct, though it's a K1 in reality.
Ben (TSR2), PaulK, Den (511Flyer)and Kevin Farnell, all got it first go:

Keith (Dev One) and Pete (Motormouse) nailed it on their second answer:
Thanks to the badgers and those who entered alternatives

- K1.jpg (110.02 KiB) Viewed 84 times
The strakes on flying surfaces appear in some K2images, but not others.
They do not seem to have been that common:

- K2.jpg (120.32 KiB) Viewed 84 times

- 2L.jpg (94.63 KiB) Viewed 84 times